ZOOLOGICAL AND BOTANICAL ASSOCIATION. 67 



anfractibus (6) clathratis marginibus bicarinatus tubereulatis, umbilico 

 magno profundo margine tuberculosa ornato ; apertura angulosa. 



Diagnosis. — Shell small, discoidal ; spire nearly flat, consisting of 6 

 whirls, their margins bicarinated and ornamented with varices or tuber- 

 cles ; whirls decussated with longitudinal and transverse lines ; umbili- 

 cus large and deep, its margin being ornamented with a row of tubercles, 

 gradually decreasing in size ; mouth angular. 



Affinities and Differences. — This pretty little Solarium differs speci- 

 fically from all other described forms, being distinguished from 8. mon%~ 

 liferum (Michelin) by its very depressed spire, and large, deep umbilicus; 

 and from S. albensis (D'Orbigny) by its depressed spire and reticulated 

 sculpturing. Its nearest affinity is, however, with these, and, more 

 remotely, with S. ornatum (Fitton), — all species from the Gault, the two 

 former being from foreign localities, the latter a British species. 



Dimensions. — Elevation, T ^j inch. Diameter, -^ inch. 



Locality and Stratigraphical Range. — This beautifully preserved fossil 

 shell was collected from the Upper Greensand at Bingham's Melcombe, 

 near Dorchester, by the Bev. C. W. Bingham, a gentleman who has en- 

 riched the museum of that town with many contributions, and to whom 

 I have much pleasure in dedicating it. 



EXPLANATION OF THE FIGUEES, PL. I., FIG. 2. 



2. a. Solarium Binghami, side view, natural size. 



b. „ „ side view, enlarged three diameters. 



c. „ „ under surface, enlarged three diameters. 



Dr. J. Barker, Hon. Sec, read a paper " On the structure of Muscle 

 in the (Esophagus of Lion." 



The Rev. Thomas Hincks, B. A.., Corresponding Member of the 

 Dublin University Zoological and Botanical Association, read the fol- 

 lowing — 



SUPPLEMENT TO THE LIST OF ZOOPHYTES IN THE " NATUBAL HISTOBT OF LBE- 

 LAND, BY W. THOMPSON, ESQ." (VOL. TV., 1856) J WITH DESCBIPTIONS 

 OF NEW SPECIES. PLATE III., FIG8. 1 TO 7. 



In the present paper I propose to include a list of the Hydroida and 

 Poly%oa f which have occurred on the Irish coast since the publication 

 of the fourth volume of Mr. Thompson's "Fauna" in 1856, and de- 



